baber/WOPTO huggingface dataset:
Patent GB-1221470-A (GB)
Title: Apparatus for saving fuel and cleansing exhaust gas in a multi-cylinder engine
IPC: F02D17/04
Filed: 1968-11-21
Abstract: 1,221,470. I.C. engines. NISSAN JIDOSHA K.K. Nov.21, 1968 [Jan. 25, 1968], No. 55220/68. Heading F1B. In a multicylinder automobile engine, valves mounted in selected branches of the inlet manifold are operable to isolate selected cylinders from the manifold, the valves being operated by connecting means accommodated at one end in cylinder means, means responsive to coasting condition of the automobile causing actuating means to open a pipe means to communicate negative pressure from the manifold to the cylinder means so as to close the valves, whereby the selected cylinders are isolated from the manifold and the remaining cylinders receive increased mixture supply to improve combustion during coasting with a transmission gear engaged. During coasting with a transmission gear engaged, the suction in the inlet manifold 4, Figs. 1 and 2, communicated via a pipe 13 to a cylinder 15 is high enough to draw a piston valve 14 leftwards against the action of a spring 19 to close a vent 17 and to communicate the suction via holes 14b and a port 16 to the space A above a piston 21. Consequently, the piston 21 moves upwards to close valves 10 in the inlet manifold branches 6, 7 leading to the two inner cylinders of the four-cylinder engine. In addition, a projection 30 lifts a flap valve 28 against the action of a spring 32 to vent the branches 6, 7 downstream of the valves 10 to atmosphere via an inter-communicating pipe 26 and a vent pipe 27. Mixture is now supplied only to the two outer cylinders connected to the branches 5, 8, and the engine runs on these two cylinders only. Since the mixture is being supplied to two cylinders instead of four, each cylinder receives twice as much mixture as if all four cylinders were operative, so that the combustion is improved and less carbon monoxide and unburnt hydrocarbons are exhausted to atmosphere. In addition, the air drawn in through the vent pipe 27 by the two inoperative cylinders oxidizes hydrocarbons in the exhaust. In a modification, Fig.3 (not shown), the suction-operated piston valve 14 is replaced by a solenoid valve (34) energized by a vacuum switch (33) operated by the manifold suction. In another modification, Figs. 4 and 5 (not shown), the solenoid valve (34) is energized by switches (46, 47, 48) in series, these switches being closed when the clutch and accelerator pedals are not depressed and the gear lever is not in neutral position.
Patent GB-1326280-A (GB)
Title: Flip-flop circuits
IPC: H03K3/02
Filed: 1970-11-25
Abstract: 1326280 Triggering bistable circuits LITTON INDUSTRIES Inc 25 Nov 1970 [26 Nov 1969] 55959/70 Heading H3T  To make a flip flop 10 respond only to "clear" pulses i at 40 (or set or clock pulses at 12 or 14) having greater than a given duration, the pulses are applied through NAND circuits 37, 44 and a time constant circuit 42, 43. A "0" must be applied at 40 (i, Fig. 5, not shown), for at least long enough for the resulting high output of NAND 37 to allow C42 to charge positively (j) to the level at which NAND 44 produces the negative output (l) which clears the flip-flop, its other input 45 being held positive. Similar circuits control the set input 12. A negative  check pulse at 14 (a, Fig. 4, not shown) produces a positive pulse (b) at 16 which is differentiated 17, 20 and only the positive portion (c) passed to NAND 21 which inverts it (d) at the input 25 of NAND 24 to produce a positive edge (e) at 32. To the second input of NAND 24 is applied the voltage on a capacitor 27 normally held low by conduction of a diode 30 to the normally low output 16 of NAND 13; the now high level at 16, however, reverse-biases D30, and C27 charges towards the positive supply 29 to give a slowly rising input (g) to NAND 24. When g reaches the equivalent of "1" level, both inputs to NAND 24 are high and its output e falls. The pulse e is inverted by NAND 31 and the resulting negative pulse f makes D19 conduct to ensure that C35 is discharged and the clock input of the flip-flop at h is low. At the end of pulse f whose width depends upon R28, C27, the diode 19 is reverse-biased and C35 charges until the level (h = V1) is reached at which the flip-flop triggers. Thus, the clock pulse a at 14 must last for as long as the pulse width f before the clock input h starts rising, and additionally for as long as h takes to reach V1; this renders the clock input insensitive to noise. A circuit basically similar (Fig. 1B, not shown) to the Fig. 1A circuit is provided and the two flip-flops drive respective inverters 50, 58 (101, 106) whose load resistors are all connected to a supply voltage 29 through a single diode 56. The NAND gates employ multiemitter transistors (Figs. 2, 3, not shown).
Patent GB-1339160-A (GB)
Title: Anti-dazzle headlamp and light screen therefor
IPC: F21V11/16
Filed: 1971-12-02
Abstract: 1339160 Vehicle headlamps C LEVIONNAIS 2 Dec 1971 [3 Dec 1970] 56031/71 Heading F4R An anti-dazzle headlamp for a vehicle includes a light source and parabolic reflector 1 and a light screen 100 comprising a lattice structure consisting of a number of adjacent elongate cells 6 oriented in the general direction of the reflector axis and the front of which screen terminates at a slant to the axis and wherein the inner walls of each cell have selected lower matt regions 9 and upper reflecting regions 8. Each cell may be square in crosssection with the matt and reflecting regions located as shown in Fig. 4 to direct the emergent light beam downwards and to one side to prevent dazzle of on-coming drivers. The slant at the end of the lamp is between 45 degrees and 80 degrees to the reflector axis and a yellow non- deforming glass plate covers the end of the cells. Parts of the lateral partitions of the shortest cells may be inclined to the reflector axis. As shown in Fig. 10, the partitioning of the cells may be effected by a number of joined accordion - pleated sheets which are matt on one side and reflecting on the other, and which give diamondshaped cells.
Patent GB-560416-A (GB)
Abstract: 560,416. Solid fuel burning cooking ranges. PATE, G., and NAISMITH, A. Nov. 12, 1942, No. 16027. [Class 126] The hot gases from a solid fuel fire pass from the fire chamber 10 along a horizontal flue passage 14 between the range to plate 15 and an upper oven chamber 12, downwardly along a flue passage 16 at the end of the oven chamber 12, and return along a flue passage 17 between the upper oven chamber 12 and a lower oven chamber 13 to a flue outlet 18 at the rear of the range. A damper 24 in the flue outlet 18 is operated through a connecting rod 23 by a crank arm on a rotatable air regulator fitted to the ashpit 11. The fire chamber 10 may be enclosed on three sides by a hot water boiler 25. The range is enclosed in heat-insulating lagging 29.
Patent GB-1371499-A (GB)
Title: Time division multichannel on-off signal transmission system
IPC: H04L7/06
Filed: 1971-12-03
Abstract: 1371499 Multiplex pulse signalling NISSAN MOTOR CO Ltd 3 Dec 1971 [21 April 1971 29 May 1971] 56146/71 Heading H4L In a time division multiplex system, e.g. for transmitting control signals from a plurality of transmitters to corresponding receivers over a common line using a common clock pulse generator, the clock pulse generator, Fig. 2, produces repetitive sequences of channel pulses separated by a frame synchronizing pulse of greater amplitude which are supplied to a reference signal line 13. At a transmitter 14, a clipper 31 separates the sync. pulses which reset a counter 34, the clock pulses being limited at 32 and supplied to the input of the counter. Each stage of the counter is connected to a logic circuit 42 which produces an output at the time slot allotted to the transmitter, to open a gate 44 to which the input signal on line 16 is applied, the output of the gate being supplied to the transmission line 18. At the corresponding receiver 19 the sync. signal is selected as at the transmitter to reset the counter 54 which via logic circuit 62 opens the gate 64 at the appropriate time slot to pass the signal on line 18 to a converter 67 provided with error checking means. The converter 67, Fig. 4, includes a shift register 71, 72, 73, which receives the output of gate 64 and is reset by the output of logic circuit 62. The shift register provides three outputs which are connected in different pairs to gates 81, 82, 83, respectively, which supply an output via OR gate 84 when the shift register supplies at least two output signals. This arrangement may be replaced by an integrator and discriminator which produces an output whenever the output of the integrator exceeds a predetermined value.
Patent GB-1373978-A (GB)
Title: Integrating scale
IPC: G01G11/04
Filed: 1972-12-12
Abstract: 1373978 Pulse width equalizing; amplifiers; frequency modulation RELIANCE ELECTRIC CO 12 Dec 1972 [6 Jan 1972] 57234/72 Headings H3T and H4L [Also in Divisions Gl and H2]  Pulse width equalizing the pulse train from, e.g. a tachometer 11 (Fig. 2) is converted to a constant width pulse train having a proportional frequency. The initial signal is fed through an integrating amplifier 34 and two inverters forming a Schmitt trigger 39 to a four bit counter 43 and a flip-flop 48. The output at 50, whose frequency is the input frequency divided by 1, 2, 4, 8, 16 or 32 as selected by connector 51, is fed through flip-flops 52, 53. Clock pulses from an oscillator 55 are used to trigger the flip-flops 52, 53 so that the width of the output pulse train at 54 is determined by the time taken to count sixteen pulses in counter 57, when NAND gate 58 produces an output pulse and clears flip-flops 52 and 53. The next pulse on lead 50 switches the flip-flops and starts the next output pulse on lead 54. Amplifiers.-The D.C. output from a bridge network 17 (Fig. 3) is fed through a balanced preamplifier 72, 73, 78 to main amplifier 83 and to output amplifier 86 via switch 85. Amplifier 83 has an additional feedback circuit through normally open switch 92, which is controlled together with switch 85 by a timing circuit 100. To compensate for drift in the output from amplifier 83, the timing circuit periodically cuts off the power supply to the bridge, opens switch 85 and closes switch 92. Any residual signal from amplifier 83 is then stored on capacitor 95 to back bias amplifier 83 when the circuit is restored to normal. The output from amplifier 86 is maintained when switch 85 is open by feedback capacitor 103. The initial output from amplifier 86 is zeroized by potentiometer 88. Frequency modulation.-A D.C. voltage on lead 32 (Fig. 5) is integrated by amplifier 153 and feedback capacitor 154 to appear as an increasing voltage 184 (Fig. 7) at junction 157. Amplifiers 160, 163 are normally biased to cut off, but the increasing voltage at 157 switches on amplifier 163 or 160, depending on whether the voltage on lead 32 is positive or negative, and an output signal is fed to terminal J of flip-flop 174 or 176 respectively. The Q output of the flip-flops close switch 177 or 179 to reverse the voltage polarity of the input and to cause the integrated voltage at junction 157 to decrease, as shown at 186. The flip-flops are triggered by clock pulses on lead 61 and the time for conduction of amplifiers 160, 163 is one clock pulse period t 2 . The time interval t 1  between outputs from the flip-flops, and hence the output pulse frequency, is proportional to the magnitude of the D.C. input voltage on lead 132.
Patent GB-1337349-A (GB)
Title: Pyrazoloisindolones their preparation and use as plant growth regulants
Filed: 1971-12-09
Abstract: 1337349 Pyrazoloisoindolones in plant growth regulation E I DU PONT DE NEMOURS & CO 9 Dec 1971 [10 Dec 1970] 57290/71 Heading C1B [Also in Division C2] A plant growth regulant composition comprises a diluent and/or a surface active agent and a compound of the formula wherein each of X, Y and Z, which are the same or different is a hydrogen or halogen atom, an alkyl or alkoxy group containing up to 4 carbon atoms, a hydroxyl group or a nitro group. The compositions generally contain from 1-5% by wt. of the surface active agent, and may be formulated and applied in conventional manner, e.g. in the form of granules, pellets, wettable powders or suspension concentrates. At low rates of application, e.g. 0À0025 to 8 pounds per acre, the active ingredient generally has a growth retardant effect, whilst at higher rates of application, e.g. 10-40 pounds per acre, many of the active compounds exhibit herbicidal activity on some plant species.
Patent GB-1166299-A (GB)
Title: Radiation Detector.
IPC: H01J40/14
Filed: 1966-12-22
Abstract: 1,166,299. Monitoring radiation. FR. SAUTER A.G. Dec.22, 1966 [Dec.22, 1965], No. 57521/66. Heading G1A. In a radiation monitoring circuit in which a radiation sensitive device F is included in an A.C. circuit with a transformer T, a limiting resistor W, and a rectifier arrangement G, and wherein switching members R 1 , R 2  which may be reed relays and have differing response values are included in the rectifier D.C. path, a device U which may be oscillatory or rotary periodically interrupting the radiation at a predetermined markspace ratio is included in the radiation path. Relay R 2  is normally energized when the device F is receiving the interrupted radiation and its contacts control a power relay R 3  but relay R 1  is only operated by excessive current in the event of a short circuit or a flash over in the detector tube. An interruption for 25% of a cycle at 10 C. P. S. is exemplified in connection with a flame monitoring system in which detectors respond to ultraviolet light.
Patent GB-1167382-A (GB)
Title: Improvements in or relating to Means for Purifying Sodium
Inventor: GRAFF WILLY HENRI
IPC: C22B26/10
Filed: 1966-12-29
Abstract: 1,167,382. Purifying sodium. COMMISSARIAT A L'ENERGIE ATOMIQUE. Dec. 29, 1966 [Dec. 30, 1965] , No. 58189/66. Heading C7D. Calcium and/or barium impurities are removed from molten sodium by adding sodium peroxide, heating at 150‹-300‹C. and stirring, and then removing the precipitate containing oxidized impurities from the melt. In the preferred sequence of events, the sodium peroxide is added to molten sodium at 110‹- 120‹C., the melt is then raised to 200‹- 300‹C. (all the while stirring) and the temperature is dropped to 110‹-120‹C. for removal of impurities by filtration. The reaction is performed in an environment of inert gas such as nitrogen, helium or argon.
Patent GB-1428249-A (GB)
Title: Thermal safety valve
IPC: F16K17/38
Filed: 1973-12-20
Abstract: 1428249 Valves GEORG FISCHER AG 20 Dec 1973 [20 Dec 1972] 59254/73 Heading F2V A fusible element 6 of a thermal safety valve having a spring-loaded closure member 14 and a seat 11 is housed in a cartridge 5 and the valve stem 8 is surrounded by a plastics, metal or elastomeric bellows 10. As shown the cartridge is supported by a rod I on a cover 2 and the rod, cartridge and valve stem are enclosed in a shrunk-on plastics sleeve connected to the bellows. A diaphragm 13 carries the valve member and protects the spring from the fluid, the compression of which spring is adjustable by a plug 16. The end of the stem 8 has a rim 7 which slows down the rate of valve closing and acts as an abutment when the stem is withdrawn and the fusible element is regenerated using a heating coil after it has melted and allowed the valve to close under its loading force.
Patent GB-1410419-A (GB)
Title: Preparation of 1,2-dichloroethane
IPC: C07C17/00
Filed: 1973-12-21
Abstract: 1410419 Production of 1,2-dichloroethane RHONE-PROGIL SA 21 Dec 1973 [27 Dec 1972] 59425/73 Heading C2C A process for the production of 1,2-dichloroethane comprises the continuous chlorination of ethylene by molecular chlorine at a temperature of from 20 to 80 C., protected from light radiation, in a reaction zone containing liquid 1,2-dichloroethane in the presence of dissolved ferric chloride, in which there is maintained an amount of dissolved chlorine which is from 1 to 20 g. per kg. of liquid reaction mixture, the reaction zone being a homogeneous zone in which the ratio R between the molar hourly flow rate of ethylene entering the reaction zone and the molar hourly flow rate of ethylene which saturates the 1,2-dichloroethane contained in said zone is from 0 : 1 to 140 : 1. The moisture content in the reaction zone is preferably less than 80 p.p.m. by weight of the liquid reaction mixture.
Patent GB-1378800-A (GB)
Title: Hydromechanical constant speed drive transmission
IPC: F16H61/44
Filed: 1972-12-22
Abstract: 1378800 Variable speed gearing SUNDSTRAND CORP 22 Dec 1972 [24 Jan 1972] 59438/72 Heading F2D In a transmission suitable for driving an electric generator at constant speed from an aircraft engine operating at variable speed and in which input and output ring gears 18, 19, respectively, engage intermeshing, offset planets 21, 22 and the input shaft 12 and planet carrier 20 have gear drives 40, 42 and 90, 95 with hydraulically coupled pump/motor units 112, 101 and the displacement of the unit 112 is adjustable by an hydraulic servomotor 130 controlled by a governor valve 140 responsive to output shaft speed, the arrangement being such that the output shaft rotates in the opposite sense to the input shaft and the planet carrier is rotated in the opposite sense to the input shaft when the speed of the latter is below the required output speed and in the same sense as the input shaft when input speed is above the required output speed, means is provided to prevent reverse rotation of the output shaft, i.e. in the same sense as the input shaft, in the event of seizure of two or more parts of the mechanical gearing, e.g. due to sticking of the pinions 21, 22 in the carrier 20 during starting under severely cold conditions. Reverse rotation of the output shaft is prevented by engagement of a spring-pressed detent plunger 163 with ratchet teeth formed on a part 92 of the planet carrier whereby the carrier is prevented from rotating in the same sense as the input shaft. An hydraulic pump 56 driven by gearing 50, 53 from the output shaft supplies make-up fluid to the pump/ motor units and motive fluid to the servomotor 130, and has a connection 168 with the plunger 163 so that when the output shaft and pump are rotating in the correct sense the plunger is retracted to release the carrier 20 for rotation in either direction. The plunger may be held in the retracted position by a temperature responsive latch (not shown). A toothed clutch 26 between the input shaft 12 and the ring gear 18 is held engaged by wax &c. in a chamber 33 so that a spring 35 may disconnect the drive on overheating.
Patent GB-1384714-A (GB)
Title: Rearview mirror
IPC: B60R1/08
Filed: 1971-12-31
Abstract: 1384714 Photo-electrically controlled rear view mirrors D H BALDWIN CO 31 Dec 1971 61066/71 Heading B7J [Also in Division G1] A photo-electrically controlled rear-view mirror which is moved automatically from a position in which the driver is being dazzled to one in which he is not, is provided with further photo-electric means monitoring ambient light conditions so that the automatic operation may be blocked during day light hours. Construction.-Fig. 1 (not shown) indicates the general arrangement of the mirror with centrally located bracket 13 mounting the arrangement to the vehicle frame. The principal members that are mounted by the bracket (by ball 51) are plates 45, 47 which form a socket therefore. The housing 17 itself (and members supported by the housing) is attached to plate 45 by pivot arrangement 46. When electromagnet 31 is so energized (under control of a photo-electric circuit) that it attracts permanent magnet 39 and repels 37, the cam arrangement 61-65 being carried to the left (Fig. 4A) so that projection 53 on plate 47 is in slot 63, the front surface 23 of mirror 23 is effective in the driver's field of view (Fig. 3a). When a different intensity of light is sensed by the photo-electric circuit, the electromagnet current is reversed and projection 53 is drawn up sloping cam surface 65 into slot 61, at the same time the mirror housing being tilted about 46 to render back surface 25 of the mirror effective in the driver's field of view. Cam 55 and projection 53 may be of plastics, low friction material. The securing of each position of 53 may be aided by spring 67. Manual movement of mirror is possible by means of actuator (69). Circuit.-As shown in Fig. 5, P 2  is a photoresistor which is positioned to view out of the side of the mirror away from oncoming traffic, to monitor ambient light intensity. When it is below a certain level, set using potentiometer R 15  by the driver, the photo-cell P 1  is enabled to operate. When this senses a high intensity, transistor T 7  is turned on and T 8  off to render T 1  conductive. The two-state circuit T 2 -T 6  is therefore so switched that the current in the electromagnet coil M 1  is in the direction to cause tilting of the mirror. (In this condition T 2 , T 3  on; T 4 -T 6  off). Low intensity on P 1  results in the reverse operation and current direction through M 1 . Transient light effects are reduced by capacitor C 1 . In an alternative circuit, Fig. 6 (not shown) two SCR's replace T 2 , T 3  and T 4 , T 5 .
Patent GB-1269550-A (GB)
Title: Improvements in or relating to loudspeakers
IPC: H04R1/32
Filed: 1969-12-30
Abstract: 1,269,550. Loudspeakers. EKDAHL & OLOFSSON HANDELSBOLAG. 30 Dec., 1969 [15 Aug., 1968], No. 63278/69. Headings H4J and H4X. An airtight loudspeaker cabinet is in crosssection (Fig. 3) a regular polygon having at least 6 corners. A bass unit 5 is mounted at one cabinet end wall while at least three treble units 6 (Fig. 4) are mounted in adjoining side walls adjacent the bass unit 5. The angle between the normals to the most remote side walls in which treble units 6 are mounted is at most 120 degrees. A cross-over network is provided. The cabinet rearwardly of the bass unit is preferably at least twice the diameter of the bass unit 5. The angle of radiation of the treble units is substantially 135 degrees within 6 db.
Patent GB-1279720-A (GB)
Title: Improvements in or relating to the formation of gaseous products for analysis
Inventor: KOCH WALTER
IPC: G01N33/20
Filed: 1969-12-31
Abstract: 1279720 Combustion analysis W KOCH and H LEMM 31 Dec 1969 [12 March 1969] 63427/69 Heading B1X Combustion apparatus used in gaseous analysis comprises a crucible I heated in a lower portion by, e.g. a resistor 2, and cooled in an upper portion by a cooling jacket 3. Material for analysis is introduced via tube 5 and heated whereupon any gaseous products are removed via an exit 7 in a headpiece 4 by means of a pump (not shown) and a scavenging stream of oxygen introduced via a tube 6 which also seals the filling tube 5 to air. Savenging gas may also be introduced via tube 8. The products are conveyed to, e.g. an infra red or mass spectrometer, or a gas chromatograph. A known weight of sample may be introduced. Electrodes 10, 11 of an electrostatic precipitator prevent deposition of any metallic dust on the upper cooler part of the crucible 1. The combustion and analysis may be computorised for automatic procedure. Particular application is in the analysis of carbon and sulphur and total hydrogen.